diff --git a/.gitignore b/.gitignore
index 472f0ae94b6727a31a754e73e0b3f1f591cb220c..d04b79f92e7fd1ad9fd9e196ceee95cff8732194 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,4 @@
 **/*.rs.bk
 Cargo.lock
 bin/
-pkg/
 wasm-pack.log
-www/node_modules/
diff --git a/pkg/drawing_crdt.d.ts b/pkg/drawing_crdt.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..80516b57ed2f6061c94b73a6e95d6dc5928ee3f8
--- /dev/null
+++ b/pkg/drawing_crdt.d.ts
@@ -0,0 +1,92 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+*/
+export class WasmCRDT {
+  free(): void;
+/**
+* @param {any} event_listener 
+* @returns {WasmCRDT} 
+*/
+  constructor(event_listener: any);
+/**
+* @param {string} user 
+* @returns {bool} 
+*/
+  set_user(user: string): bool;
+/**
+* @returns {string} 
+*/
+  get_user(): string | undefined;
+/**
+* @param {string} user 
+* @returns {string} 
+*/
+  static canonicalise_user(user: string): string | undefined;
+/**
+* @param {string} stroke_id 
+* @returns {string} 
+*/
+  static canonicalise_stroke_author(stroke_id: string): string | undefined;
+/**
+* @param {number} this.ptr 
+* @param {number} x 
+* @param {number} y 
+* @param {string} weight 
+* @returns {string} 
+*/
+  add_stroke(this.ptr: number, x: number, y: number, weight: string): string | undefined;
+/**
+* @param {number} this.ptr 
+* @param {string} stroke_id 
+* @param {number} x 
+* @param {number} y 
+* @param {string} weight 
+* @returns {number} 
+*/
+  add_point(this.ptr: number, stroke_id: string, x: number, y: number, weight: string): number | undefined;
+/**
+* @param {string} stroke_id 
+* @returns {bool} 
+*/
+  end_stroke(stroke_id: string): bool;
+/**
+* @param {number} this.ptr 
+* @param {string} stroke_id 
+* @returns {bool} 
+*/
+  erase_stroke(this.ptr: number, stroke_id: string): bool;
+/**
+* @returns {any} 
+*/
+  get_stroke_ids(): any;
+/**
+* @param {string} stroke_id 
+* @returns {any} 
+*/
+  get_stroke_points(stroke_id: string): any;
+/**
+* @param {string} stroke_id 
+* @returns {any} 
+*/
+  get_stroke_intervals(stroke_id: string): any;
+/**
+*/
+  fetch_events(): void;
+/**
+*/
+  fetch_deltas(): void;
+/**
+* @param {Uint8Array} deltas 
+*/
+  apply_deltas(deltas: Uint8Array): void;
+/**
+* @returns {Uint8Array} 
+*/
+  get_state_vector(): Uint8Array;
+/**
+* @param {string} user 
+* @param {Uint8Array} remote_state 
+*/
+  fetch_deltas_from_state_vector(user: string, remote_state: Uint8Array): void;
+}
diff --git a/pkg/drawing_crdt.js b/pkg/drawing_crdt.js
new file mode 100644
index 0000000000000000000000000000000000000000..206552175b5444d2dcf82e0fac2bfe48e55b9cb6
--- /dev/null
+++ b/pkg/drawing_crdt.js
@@ -0,0 +1,496 @@
+import * as wasm from './drawing_crdt_bg.wasm';
+
+const heap = new Array(32);
+
+heap.fill(undefined);
+
+heap.push(undefined, null, true, false);
+
+function getObject(idx) { return heap[idx]; }
+
+let heap_next = heap.length;
+
+function dropObject(idx) {
+    if (idx < 36) return;
+    heap[idx] = heap_next;
+    heap_next = idx;
+}
+
+function takeObject(idx) {
+    const ret = getObject(idx);
+    dropObject(idx);
+    return ret;
+}
+
+let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+cachedTextDecoder.decode();
+
+let cachegetUint8Memory0 = null;
+function getUint8Memory0() {
+    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
+        cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachegetUint8Memory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+}
+
+function addHeapObject(obj) {
+    if (heap_next === heap.length) heap.push(heap.length + 1);
+    const idx = heap_next;
+    heap_next = heap[idx];
+
+    heap[idx] = obj;
+    return idx;
+}
+
+function debugString(val) {
+    // primitive types
+    const type = typeof val;
+    if (type == 'number' || type == 'boolean' || val == null) {
+        return  `${val}`;
+    }
+    if (type == 'string') {
+        return `"${val}"`;
+    }
+    if (type == 'symbol') {
+        const description = val.description;
+        if (description == null) {
+            return 'Symbol';
+        } else {
+            return `Symbol(${description})`;
+        }
+    }
+    if (type == 'function') {
+        const name = val.name;
+        if (typeof name == 'string' && name.length > 0) {
+            return `Function(${name})`;
+        } else {
+            return 'Function';
+        }
+    }
+    // objects
+    if (Array.isArray(val)) {
+        const length = val.length;
+        let debug = '[';
+        if (length > 0) {
+            debug += debugString(val[0]);
+        }
+        for(let i = 1; i < length; i++) {
+            debug += ', ' + debugString(val[i]);
+        }
+        debug += ']';
+        return debug;
+    }
+    // Test for built-in
+    const builtInMatches = /\[object ([^\]]+)\]/.exec(toString.call(val));
+    let className;
+    if (builtInMatches.length > 1) {
+        className = builtInMatches[1];
+    } else {
+        // Failed to match the standard '[object ClassName]'
+        return toString.call(val);
+    }
+    if (className == 'Object') {
+        // we're a user defined class or Object
+        // JSON.stringify avoids problems with cycles, and is generally much
+        // easier than looping through ownProperties of `val`.
+        try {
+            return 'Object(' + JSON.stringify(val) + ')';
+        } catch (_) {
+            return 'Object';
+        }
+    }
+    // errors
+    if (val instanceof Error) {
+        return `${val.name}: ${val.message}\n${val.stack}`;
+    }
+    // TODO we could test for more things here, like `Set`s and `Map`s.
+    return className;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+let cachedTextEncoder = new TextEncoder('utf-8');
+
+const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
+    ? function (arg, view) {
+    return cachedTextEncoder.encodeInto(arg, view);
+}
+    : function (arg, view) {
+    const buf = cachedTextEncoder.encode(arg);
+    view.set(buf);
+    return {
+        read: arg.length,
+        written: buf.length
+    };
+});
+
+function passStringToWasm0(arg, malloc, realloc) {
+
+    if (realloc === undefined) {
+        const buf = cachedTextEncoder.encode(arg);
+        const ptr = malloc(buf.length);
+        getUint8Memory0().subarray(ptr, ptr + buf.length).set(buf);
+        WASM_VECTOR_LEN = buf.length;
+        return ptr;
+    }
+
+    let len = arg.length;
+    let ptr = malloc(len);
+
+    const mem = getUint8Memory0();
+
+    let offset = 0;
+
+    for (; offset < len; offset++) {
+        const code = arg.charCodeAt(offset);
+        if (code > 0x7F) break;
+        mem[ptr + offset] = code;
+    }
+
+    if (offset !== len) {
+        if (offset !== 0) {
+            arg = arg.slice(offset);
+        }
+        ptr = realloc(ptr, len, len = offset + arg.length * 3);
+        const view = getUint8Memory0().subarray(ptr + offset, ptr + len);
+        const ret = encodeString(arg, view);
+
+        offset += ret.written;
+    }
+
+    WASM_VECTOR_LEN = offset;
+    return ptr;
+}
+
+let cachegetInt32Memory0 = null;
+function getInt32Memory0() {
+    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory0;
+}
+
+function getArrayU8FromWasm0(ptr, len) {
+    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
+}
+
+let stack_pointer = 32;
+
+function addBorrowedObject(obj) {
+    if (stack_pointer == 1) throw new Error('out of js stack');
+    heap[--stack_pointer] = obj;
+    return stack_pointer;
+}
+
+function passArray8ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 1);
+    getUint8Memory0().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+/**
+*/
+export class WasmCRDT {
+
+    static __wrap(ptr) {
+        const obj = Object.create(WasmCRDT.prototype);
+        obj.ptr = ptr;
+
+        return obj;
+    }
+
+    free() {
+        const ptr = this.ptr;
+        this.ptr = 0;
+
+        wasm.__wbg_wasmcrdt_free(ptr);
+    }
+    /**
+    * @param {any} event_listener
+    * @returns {WasmCRDT}
+    */
+    constructor(event_listener) {
+        try {
+            var ret = wasm.wasmcrdt_new(addBorrowedObject(event_listener));
+            return WasmCRDT.__wrap(ret);
+        } finally {
+            heap[stack_pointer++] = undefined;
+        }
+    }
+    /**
+    * @param {string} user
+    * @returns {bool}
+    */
+    set_user(user) {
+        var ptr0 = passStringToWasm0(user, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ret = wasm.wasmcrdt_set_user(this.ptr, ptr0, len0);
+        return ret !== 0;
+    }
+    /**
+    * @returns {string}
+    */
+    get_user() {
+        wasm.wasmcrdt_get_user(8, this.ptr);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        let v0;
+        if (r0 !== 0) {
+            v0 = getStringFromWasm0(r0, r1).slice();
+            wasm.__wbindgen_free(r0, r1 * 1);
+        }
+        return v0;
+    }
+    /**
+    * @param {string} user
+    * @returns {string}
+    */
+    static canonicalise_user(user) {
+        var ptr0 = passStringToWasm0(user, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_canonicalise_user(8, ptr0, len0);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        let v1;
+        if (r0 !== 0) {
+            v1 = getStringFromWasm0(r0, r1).slice();
+            wasm.__wbindgen_free(r0, r1 * 1);
+        }
+        return v1;
+    }
+    /**
+    * @param {string} stroke_id
+    * @returns {string}
+    */
+    static canonicalise_stroke_author(stroke_id) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_canonicalise_stroke_author(8, ptr0, len0);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        let v1;
+        if (r0 !== 0) {
+            v1 = getStringFromWasm0(r0, r1).slice();
+            wasm.__wbindgen_free(r0, r1 * 1);
+        }
+        return v1;
+    }
+    /**
+    * @param {number} this.ptr
+    * @param {number} x
+    * @param {number} y
+    * @param {string} weight
+    * @returns {string}
+    */
+    add_stroke(x, y, weight, colour) {
+        var ptr0 = passStringToWasm0(colour, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_add_stroke(8, this.ptr, x, y, weight, ptr0, len0);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        let v1;
+        if (r0 !== 0) {
+            v1 = getStringFromWasm0(r0, r1).slice();
+            wasm.__wbindgen_free(r0, r1 * 1);
+        }
+        return v1;
+    }
+    /**
+    * @param {number} this.ptr
+    * @param {string} stroke_id
+    * @param {number} x
+    * @param {number} y
+    * @param {string} weight
+    * @returns {number}
+    */
+    add_point(stroke_id, x, y, weight, colour) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ptr1 = passStringToWasm0(colour, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len1 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_add_point(8, this.ptr, ptr0, len0, x, y, weight, ptr1, len1);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        return r0 === 0 ? undefined : r1 >>> 0;
+    }
+    /**
+    * @param {string} stroke_id
+    * @returns {bool}
+    */
+    end_stroke(stroke_id) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ret = wasm.wasmcrdt_end_stroke(this.ptr, ptr0, len0);
+        return ret !== 0;
+    }
+    /**
+    * @param {number} this.ptr
+    * @param {string} stroke_id
+    * @returns {bool}
+    */
+    erase_stroke(stroke_id, from, to) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ret = wasm.wasmcrdt_erase_stroke(this.ptr, ptr0, len0, from, to);
+        return ret !== 0;
+    }
+    /**
+    * @returns {any}
+    */
+    get_stroke_ids() {
+        var ret = wasm.wasmcrdt_get_stroke_ids(this.ptr);
+        return takeObject(ret);
+    }
+    /**
+    * @param {string} stroke_id
+    * @returns {any}
+    */
+    get_stroke_points(stroke_id) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ret = wasm.wasmcrdt_get_stroke_points(this.ptr, ptr0, len0);
+        return takeObject(ret);
+    }
+    /**
+    * @param {string} stroke_id
+    * @returns {any}
+    */
+    get_stroke_intervals(stroke_id) {
+        var ptr0 = passStringToWasm0(stroke_id, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ret = wasm.wasmcrdt_get_stroke_intervals(this.ptr, ptr0, len0);
+        return takeObject(ret);
+    }
+    /**
+    */
+    fetch_events() {
+        wasm.wasmcrdt_fetch_events(this.ptr);
+    }
+    /**
+    */
+    fetch_deltas() {
+        wasm.wasmcrdt_fetch_deltas(this.ptr);
+    }
+    /**
+    * @param {Uint8Array} deltas
+    */
+    apply_deltas(deltas) {
+        var ptr0 = passArray8ToWasm0(deltas, wasm.__wbindgen_malloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_apply_deltas(this.ptr, ptr0, len0);
+    }
+    /**
+    * @returns {Uint8Array}
+    */
+    get_state_vector() {
+        wasm.wasmcrdt_get_state_vector(8, this.ptr);
+        var r0 = getInt32Memory0()[8 / 4 + 0];
+        var r1 = getInt32Memory0()[8 / 4 + 1];
+        var v0 = getArrayU8FromWasm0(r0, r1).slice();
+        wasm.__wbindgen_free(r0, r1 * 1);
+        return v0;
+    }
+    /**
+    * @param {string} user
+    * @param {Uint8Array} remote_state
+    */
+    fetch_deltas_from_state_vector(user, remote_state) {
+        var ptr0 = passStringToWasm0(user, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+        var len0 = WASM_VECTOR_LEN;
+        var ptr1 = passArray8ToWasm0(remote_state, wasm.__wbindgen_malloc);
+        var len1 = WASM_VECTOR_LEN;
+        wasm.wasmcrdt_fetch_deltas_from_state_vector(this.ptr, ptr0, len0, ptr1, len1);
+    }
+}
+
+export const __wbindgen_object_drop_ref = function(arg0) {
+    takeObject(arg0);
+};
+
+export const __wbindgen_string_new = function(arg0, arg1) {
+    var ret = getStringFromWasm0(arg0, arg1);
+    return addHeapObject(ret);
+};
+
+export const __wbg_onstroke_a7ff14dcafc1fe51 = function(arg0, arg1, arg2, arg3) {
+    try {
+        getObject(arg0).on_stroke(getStringFromWasm0(arg1, arg2), takeObject(arg3));
+    } finally {
+        wasm.__wbindgen_free(arg1, arg2);
+    }
+};
+
+export const __wbg_oninterval_46888b73c9d9a955 = function(arg0, arg1, arg2, arg3) {
+    try {
+        getObject(arg0).on_interval(getStringFromWasm0(arg1, arg2), takeObject(arg3));
+    } finally {
+        wasm.__wbindgen_free(arg1, arg2);
+    }
+};
+
+export const __wbg_ondeltas_5b4dc1394a6fe1b4 = function(arg0, arg1, arg2) {
+    var v0 = getArrayU8FromWasm0(arg1, arg2).slice();
+    wasm.__wbindgen_free(arg1, arg2 * 1);
+    getObject(arg0).on_deltas(v0);
+};
+
+export const __wbg_ondeltasfromstate_f665f5a618857e86 = function(arg0, arg1, arg2, arg3, arg4) {
+    try {
+        var v0 = getArrayU8FromWasm0(arg3, arg4).slice();
+        wasm.__wbindgen_free(arg3, arg4 * 1);
+        getObject(arg0).on_deltas_from_state(getStringFromWasm0(arg1, arg2), v0);
+    } finally {
+        wasm.__wbindgen_free(arg1, arg2);
+    }
+};
+
+export const __wbindgen_object_clone_ref = function(arg0) {
+    var ret = getObject(arg0);
+    return addHeapObject(ret);
+};
+
+export const __widl_f_log_1_ = function(arg0) {
+    console.log(getObject(arg0));
+};
+
+export const __wbindgen_number_new = function(arg0) {
+    var ret = arg0;
+    return addHeapObject(ret);
+};
+
+export const __wbg_new_4fee7e2900033464 = function() {
+    var ret = new Array();
+    return addHeapObject(ret);
+};
+
+export const __wbg_push_ba9b5e3c25cff8f9 = function(arg0, arg1) {
+    var ret = getObject(arg0).push(getObject(arg1));
+    return ret;
+};
+
+export const __wbg_new_b43fc449db38d3bd = function(arg0, arg1) {
+    var ret = new Error(getStringFromWasm0(arg0, arg1));
+    return addHeapObject(ret);
+};
+
+export const __wbindgen_debug_string = function(arg0, arg1) {
+    var ret = debugString(getObject(arg1));
+    var ptr0 = passStringToWasm0(ret, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
+    var len0 = WASM_VECTOR_LEN;
+    getInt32Memory0()[arg0 / 4 + 1] = len0;
+    getInt32Memory0()[arg0 / 4 + 0] = ptr0;
+};
+
+export const __wbindgen_throw = function(arg0, arg1) {
+    throw new Error(getStringFromWasm0(arg0, arg1));
+};
+
+export const __wbindgen_rethrow = function(arg0) {
+    throw takeObject(arg0);
+};
+
diff --git a/pkg/drawing_crdt_bg.d.ts b/pkg/drawing_crdt_bg.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..035620f69cd89bf3d77da6bcd2c30a5f19714db3
--- /dev/null
+++ b/pkg/drawing_crdt_bg.d.ts
@@ -0,0 +1,24 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export function __wbg_wasmcrdt_free(a: number): void;
+export function wasmcrdt_new(a: number): number;
+export function wasmcrdt_set_user(a: number, b: number, c: number): number;
+export function wasmcrdt_get_user(a: number, b: number): void;
+export function wasmcrdt_canonicalise_user(a: number, b: number, c: number): void;
+export function wasmcrdt_canonicalise_stroke_author(a: number, b: number, c: number): void;
+export function wasmcrdt_add_stroke(a: number, b: number, c: number, d: number, e: number, f: number, g: number): void;
+export function wasmcrdt_add_point(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number): void;
+export function wasmcrdt_end_stroke(a: number, b: number, c: number): number;
+export function wasmcrdt_erase_stroke(a: number, b: number, c: number, d: number, e: number): number;
+export function wasmcrdt_get_stroke_ids(a: number): number;
+export function wasmcrdt_get_stroke_points(a: number, b: number, c: number): number;
+export function wasmcrdt_get_stroke_intervals(a: number, b: number, c: number): number;
+export function wasmcrdt_fetch_events(a: number): void;
+export function wasmcrdt_fetch_deltas(a: number): void;
+export function wasmcrdt_apply_deltas(a: number, b: number, c: number): void;
+export function wasmcrdt_get_state_vector(a: number, b: number): void;
+export function wasmcrdt_fetch_deltas_from_state_vector(a: number, b: number, c: number, d: number, e: number): void;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_realloc(a: number, b: number, c: number): number;
+export function __wbindgen_free(a: number, b: number): void;
diff --git a/pkg/drawing_crdt_bg.wasm b/pkg/drawing_crdt_bg.wasm
new file mode 100644
index 0000000000000000000000000000000000000000..4612d38758c6d8098454e1226855791e71dc2b27
Binary files /dev/null and b/pkg/drawing_crdt_bg.wasm differ
diff --git a/pkg/package.json b/pkg/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..f00a04184832ee766777b8b8e0e15dfe2ab8333d
--- /dev/null
+++ b/pkg/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "drawing-crdt",
+  "collaborators": [
+    "Moritz Langenstein <ml5717@ic.ac.uk>"
+  ],
+  "version": "0.1.0",
+  "files": [
+    "drawing_crdt_bg.wasm",
+    "drawing_crdt.js",
+    "drawing_crdt.d.ts"
+  ],
+  "module": "drawing_crdt.js",
+  "types": "drawing_crdt.d.ts",
+  "sideEffects": "false"
+}
\ No newline at end of file
diff --git a/src/crdt.rs b/src/crdt.rs
index d4ed9f224fa58b710146affeb58f8dd1e5b5c305..ea56ba1c1fd8007fbc00561cb0b680347f03eeaa 100644
--- a/src/crdt.rs
+++ b/src/crdt.rs
@@ -1,9 +1,8 @@
 use fixedbitset::FixedBitSet;
 use ordered_float::NotNan;
 use serde::de::{self, Deserialize, DeserializeSeed, Deserializer, MapAccess, SeqAccess, Visitor};
-use serde::ser::{
-    Serialize, SerializeMap, SerializeSeq, SerializeStruct, SerializeTuple, Serializer,
-};
+use serde::ser::{Serialize, SerializeMap, SerializeSeq, SerializeTuple, Serializer};
+use std::cell::{Ref, RefCell};
 use std::cmp;
 use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::collections::HashMap;
@@ -81,26 +80,21 @@ impl Serialize for Point {
     where
         S: Serializer,
     {
-        if serializer.is_human_readable() {
-            // There are four fields inside the struct
-            let mut state = serializer.serialize_struct("Point", 4)?;
+        let human_readable = serializer.is_human_readable();
 
-            state.serialize_field("x", &self.x)?;
-            state.serialize_field("y", &self.y)?;
-            state.serialize_field("weight", &self.weight)?;
-            state.serialize_field("colour", &format!("{:06X}", self.colour))?;
+        let mut tuple = serializer.serialize_tuple(4)?;
 
-            state.end()
-        } else {
-            let mut tuple = serializer.serialize_tuple(4)?;
+        tuple.serialize_element(&self.x)?;
+        tuple.serialize_element(&self.y)?;
+        tuple.serialize_element(&self.weight)?;
 
-            tuple.serialize_element(&self.x)?;
-            tuple.serialize_element(&self.y)?;
-            tuple.serialize_element(&self.weight)?;
+        if human_readable {
+            tuple.serialize_element(&format!("#{:06X}", self.colour))?;
+        } else {
             tuple.serialize_element(&self.colour)?;
-
-            tuple.end()
         }
+
+        tuple.end()
     }
 }
 
@@ -154,7 +148,7 @@ impl Point {
     }
 
     fn try_new(x: i32, y: i32, weight: f32, colour: &str) -> Option<Point> {
-        match u32::from_str_radix(colour, 16) {
+        match u32::from_str_radix(&colour[1..], 16) {
             Ok(colour) => Some(Point {
                 x,
                 y,
@@ -219,6 +213,23 @@ where
     }
 }
 
+impl<T> Serialize for Interval<T>
+where
+    T: IntervalBound + Serialize,
+{
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut tuple = serializer.serialize_tuple(2)?;
+
+        tuple.serialize_element(&self.from)?;
+        tuple.serialize_element(&self.to)?;
+
+        tuple.end()
+    }
+}
+
 #[derive(Clone, Hash, Debug)]
 pub struct IntervalUnion<T>(Vec<Interval<T>>)
 where
@@ -232,14 +243,18 @@ where
     where
         S: Serializer,
     {
-        let mut seq = serializer.serialize_seq(Some(self.0.len() * 2))?;
+        if serializer.is_human_readable() {
+            self.0.serialize(serializer)
+        } else {
+            let mut seq = serializer.serialize_seq(Some(self.0.len() * 2))?;
 
-        for interval in &self.0 {
-            seq.serialize_element(&interval.from)?;
-            seq.serialize_element(&interval.to)?;
-        }
+            for interval in &self.0 {
+                seq.serialize_element(&interval.from)?;
+                seq.serialize_element(&interval.to)?;
+            }
 
-        seq.end()
+            seq.end()
+        }
     }
 }
 
@@ -1230,8 +1245,8 @@ impl StateVec {
 }
 
 pub trait EventListener {
-    fn on_stroke(&self, stroke: String, points: &VecMap<Point>);
-    fn on_interval(&self, stroke: String, intervals: &IntervalUnion<NotNan<f32>>);
+    fn on_stroke(&self, stroke_id: String, points: Ref<VecMap<Point>>);
+    fn on_interval(&self, stroke_id: String, intervals: Ref<IntervalUnion<NotNan<f32>>>);
 
     fn on_deltas(&self, deltas: DeltaVec);
     fn on_deltas_from_state(&self, user: String, deltas: DeltaVec);
@@ -1241,7 +1256,7 @@ pub struct CRDT {
     user: Option<u128>,
     active_strokes: (FixedBitSet, HashMap<StrokeID, u8>),
 
-    crdt: Dirty<HashMap<u128, Dirty<User>>>,
+    crdt: RefCell<Dirty<HashMap<u128, Dirty<User>>>>,
     deltas: HashMap<StrokeID, StrokeDelta>,
 
     state: StateVec,
@@ -1265,7 +1280,7 @@ impl CRDT {
                 HashMap::with_capacity(std::u8::MAX as usize),
             ),
 
-            crdt: Dirty::new(HashMap::new(), false),
+            crdt: RefCell::new(Dirty::new(HashMap::new(), false)),
             deltas: HashMap::new(),
 
             state: StateVec::new(),
@@ -1361,8 +1376,9 @@ impl CRDT {
             None => return None,
         };
 
-        let entry = self
-            .crdt
+        let mut crdt = self.crdt.borrow_mut();
+
+        let entry = crdt
             .entry(user)
             .or_insert_with(|| Dirty::new(User::new(), true));
 
@@ -1383,7 +1399,7 @@ impl CRDT {
 
         // Implicit call to stroke.points.dirty() in Stroke::new()
         entry.dirty();
-        self.crdt.dirty();
+        crdt.dirty();
 
         let delta = self
             .deltas
@@ -1395,9 +1411,9 @@ impl CRDT {
     }
 
     fn split_stroke_id<'crdt>(
-        crdt: &'crdt Dirty<HashMap<u128, Dirty<User>>>,
+        crdt: Ref<'crdt, Dirty<HashMap<u128, Dirty<User>>>>,
         stroke_id: &str,
-    ) -> Option<(&'crdt Dirty<User>, u128, usize)> {
+    ) -> Option<(Ref<'crdt, Dirty<User>>, u128, usize)> {
         let (author, stroke) = match stroke_id.rfind('-') {
             Some(split) => stroke_id.split_at(split),
             None => return None,
@@ -1409,7 +1425,7 @@ impl CRDT {
         };
 
         let entry = match crdt.get(&author) {
-            Some(entry) => entry,
+            Some(_) => Ref::map(crdt, |crdt| crdt.get(&author).unwrap()),
             None => return None,
         };
 
@@ -1451,10 +1467,12 @@ impl CRDT {
         y: i32,
         weight: f32,
         colour: &str,
-    ) -> bool {
-        let (entry, user, stroke_idx) = match Self::split_stroke_id_mut(&mut self.crdt, stroke_id) {
+    ) -> Option<usize> {
+        let mut crdt = self.crdt.borrow_mut();
+
+        let (entry, user, stroke_idx) = match Self::split_stroke_id_mut(&mut crdt, stroke_id) {
             Some(stroke) => stroke,
-            None => return false,
+            None => return None,
         };
 
         if !self
@@ -1462,24 +1480,24 @@ impl CRDT {
             .1
             .contains_key(&StrokeID::new(user, stroke_idx))
         {
-            return false;
+            return None;
         };
 
         let idx = match entry.get_stroke_idx(stroke_idx) {
             Some(idx) => idx,
-            _ => return false,
+            _ => return None,
         };
 
         assert!(idx == (entry.strokes.len() - 1));
 
         let stroke = match entry.strokes.get_mut(idx) {
             Some(stroke) => stroke,
-            _ => return false,
+            _ => return None,
         };
 
         let point = match Point::try_new(x, y, weight, colour) {
             Some(point) => point,
-            None => return false,
+            None => return None,
         };
 
         stroke.points.push(point.clone());
@@ -1487,7 +1505,7 @@ impl CRDT {
 
         stroke.points.dirty();
         entry.dirty();
-        self.crdt.dirty();
+        crdt.dirty();
 
         let delta = self
             .deltas
@@ -1495,11 +1513,12 @@ impl CRDT {
             .or_insert_with(StrokeDelta::new);
         delta.points.insert(point_idx, point);
 
-        true
+        Some(point_idx + 1)
     }
 
     pub fn end_stroke(&mut self, stroke_id: &str) -> bool {
-        let (_entry, user, stroke_idx) = match Self::split_stroke_id(&self.crdt, stroke_id) {
+        let (_entry, user, stroke_idx) = match Self::split_stroke_id(self.crdt.borrow(), stroke_id)
+        {
             Some(stroke) => stroke,
             None => return false,
         };
@@ -1524,7 +1543,9 @@ impl CRDT {
             _ => return false,
         };
 
-        let (entry, user, stroke_idx) = match Self::split_stroke_id_mut(&mut self.crdt, stroke_id) {
+        let mut crdt = self.crdt.borrow_mut();
+
+        let (entry, user, stroke_idx) = match Self::split_stroke_id_mut(&mut crdt, stroke_id) {
             Some(stroke) => stroke,
             None => return false,
         };
@@ -1544,7 +1565,7 @@ impl CRDT {
         if stroke.intervals.union(&unit_interval) {
             stroke.intervals.dirty();
             entry.dirty();
-            self.crdt.dirty();
+            crdt.dirty();
 
             let delta = self
                 .deltas
@@ -1556,8 +1577,24 @@ impl CRDT {
         true
     }
 
-    pub fn get_stroke_points(&self, stroke_id: &str) -> Option<&VecMap<Point>> {
-        let (entry, _user, stroke_idx) = match Self::split_stroke_id(&self.crdt, stroke_id) {
+    pub fn get_stroke_ids(&self) -> Vec<StrokeID> {
+        let mut ids = Vec::new();
+
+        for (user, entry) in self.crdt.borrow().deref().deref() {
+            for stroke in entry.strokes.deref() {
+                if !stroke.points.is_empty() {
+                    ids.push(StrokeID::new(*user, stroke.index))
+                }
+            }
+        }
+
+        ids
+    }
+
+    pub fn get_stroke_points(&self, stroke_id: &str) -> Option<Ref<VecMap<Point>>> {
+        let crdt = self.crdt.borrow();
+
+        let (entry, _user, stroke_idx) = match Self::split_stroke_id(crdt, stroke_id) {
             Some(stroke) => stroke,
             None => return None,
         };
@@ -1567,11 +1604,15 @@ impl CRDT {
             None => return None,
         };
 
-        entry.strokes.get(idx).map(|stroke| stroke.points.deref())
+        Some(Ref::map(entry, |entry| {
+            entry.strokes.get(idx).unwrap().points.deref()
+        }))
     }
 
-    pub fn get_stroke_intervals(&self, stroke_id: &str) -> Option<&IntervalUnion<NotNan<f32>>> {
-        let (entry, _user, stroke_idx) = match Self::split_stroke_id(&self.crdt, stroke_id) {
+    pub fn get_stroke_intervals(&self, stroke_id: &str) -> Option<Ref<IntervalUnion<NotNan<f32>>>> {
+        let crdt = self.crdt.borrow();
+
+        let (entry, _user, stroke_idx) = match Self::split_stroke_id(crdt, stroke_id) {
             Some(stroke) => stroke,
             None => return None,
         };
@@ -1581,50 +1622,81 @@ impl CRDT {
             _ => return None,
         };
 
-        entry
-            .strokes
-            .get(idx)
-            .map(|stroke| stroke.intervals.deref())
+        Some(Ref::map(entry, |entry| {
+            entry.strokes.get(idx).unwrap().intervals.deref()
+        }))
     }
 
-    pub fn fetch_events(&mut self) {
-        if !self.crdt.has_dirty_events() {
+    pub fn fetch_events(&self) {
+        if !self.crdt.borrow().has_dirty_events() {
             return;
         };
 
-        self.crdt.clean_events();
+        let mut stroke_events: Vec<(u128, usize)> = Vec::new();
+        let mut interval_events: Vec<(u128, usize)> = Vec::new();
 
-        let mut stroke_events = Vec::new();
-        let mut interval_events = Vec::new();
+        {
+            let mut crdt = self.crdt.borrow_mut();
 
-        for (user, entry) in self.crdt.deref_mut() {
-            if !entry.has_dirty_events() {
-                continue;
-            };
+            crdt.clean_events();
 
-            entry.clean_events();
+            for (user, entry) in crdt.deref_mut().deref_mut() {
+                if !entry.has_dirty_events() {
+                    continue;
+                };
 
-            let user = CRDT::uuid_to_string(*user) + "-";
+                entry.clean_events();
 
-            for (i, stroke) in entry.strokes.iter_mut().enumerate() {
-                if stroke.points.has_dirty_events() {
-                    stroke.points.clean_events();
-                    stroke_events.push((user.clone() + &i.to_string(), stroke.points.deref()));
-                }
+                for (i, stroke) in entry.strokes.iter_mut().enumerate() {
+                    if stroke.points.has_dirty_events() {
+                        stroke.points.clean_events();
+                        stroke_events.push((*user, i));
+                    }
 
-                if stroke.intervals.has_dirty_events() {
-                    stroke.intervals.clean_events();
-                    interval_events.push((user.clone() + &i.to_string(), stroke.intervals.deref()));
+                    if stroke.intervals.has_dirty_events() {
+                        stroke.intervals.clean_events();
+                        interval_events.push((*user, i));
+                    }
                 }
             }
         }
 
-        for (user, points) in stroke_events {
-            self.event_listener.on_stroke(user, points);
+        for (user, idx) in stroke_events {
+            let crdt = self.crdt.borrow();
+
+            let stroke_idx = crdt.get(&user).unwrap().strokes.get(idx).unwrap().index;
+
+            self.event_listener.on_stroke(
+                CRDT::uuid_to_string(user) + "-" + &stroke_idx.to_string(),
+                Ref::map(crdt, |crdt| {
+                    crdt.get(&user)
+                        .unwrap()
+                        .strokes
+                        .get(idx)
+                        .unwrap()
+                        .points
+                        .deref()
+                }),
+            );
         }
 
-        for (user, intervals) in interval_events {
-            self.event_listener.on_interval(user, intervals);
+        for (user, idx) in interval_events {
+            let crdt = self.crdt.borrow();
+
+            let stroke_idx = crdt.get(&user).unwrap().strokes.get(idx).unwrap().index;
+
+            self.event_listener.on_interval(
+                CRDT::uuid_to_string(user) + "-" + &stroke_idx.to_string(),
+                Ref::map(crdt, |crdt| {
+                    crdt.get(&user)
+                        .unwrap()
+                        .strokes
+                        .get(idx)
+                        .unwrap()
+                        .intervals
+                        .deref()
+                }),
+            );
         }
     }
 
@@ -1648,11 +1720,12 @@ impl CRDT {
             return;
         };
 
-        self.crdt.dirty();
+        let mut crdt = self.crdt.borrow_mut();
+
+        crdt.dirty();
 
         for (stroke_id, stroke_delta) in deltas {
-            let entry = self
-                .crdt
+            let entry = crdt
                 .entry(stroke_id.0)
                 .or_insert_with(|| Dirty::new(User::new(), true));
 
@@ -1682,13 +1755,15 @@ impl CRDT {
     }
 
     pub fn get_state_vector(&mut self) -> &StateVec {
-        if !self.crdt.has_dirty_state() {
+        let mut crdt = self.crdt.borrow_mut();
+
+        if !crdt.has_dirty_state() {
             return &self.state;
         };
 
-        self.crdt.clean_state();
+        crdt.clean_state();
 
-        for (user, entry) in self.crdt.deref_mut() {
+        for (user, entry) in crdt.deref_mut().deref_mut() {
             if !entry.has_dirty_state() {
                 continue;
             };
@@ -1746,13 +1821,15 @@ impl CRDT {
     pub fn fetch_deltas_from_state_vector(&mut self, user: String, remote_state: &StateVec) {
         self.get_state_vector();
 
+        let crdt = self.crdt.borrow();
+
         let mut deltas = HashMap::new();
 
         web_sys::console::log_1(&format!("local state: {:?}", self.state).into());
         web_sys::console::log_1(&format!("remote state: {:?}", remote_state).into());
 
         for (user, strokes_state) in &self.state.strokes {
-            let strokes = &self.crdt.get(user).unwrap().strokes;
+            let strokes = &crdt.get(user).unwrap().strokes;
 
             if let Some(remote_strokes_state) = remote_state.strokes.get(user) {
                 let mut difference = (*strokes_state).clone();
@@ -1815,7 +1892,7 @@ impl CRDT {
         }
 
         for (stroke_id, intervals_state) in &self.state.intervals {
-            let entry = self.crdt.get(&stroke_id.0).unwrap();
+            let entry = crdt.get(&stroke_id.0).unwrap();
             let intervals = &entry
                 .strokes
                 .get(entry.get_stroke_idx(stroke_id.1).unwrap())
diff --git a/src/lib.rs b/src/lib.rs
index 89c5d143203b19b6798af8ad19be07e7e7cec6a3..a81c130e809e37af7f982c711ac68e3432e23789 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,6 +5,8 @@ use wasm_bindgen::prelude::*;
 use js_sys::Error;
 use ordered_float::NotNan;
 use serde_wasm_bindgen::to_value as to_js_value;
+use std::cell::Ref;
+use std::ops::Deref;
 use std::option::Option;
 use vec_map::VecMap;
 
@@ -25,10 +27,10 @@ extern "C" {
     pub type WasmEventListener;
 
     #[wasm_bindgen(structural, method)]
-    pub fn on_stroke(this: &WasmEventListener, stroke: String, points: JsValue);
+    pub fn on_stroke(this: &WasmEventListener, stroke_id: String, points: JsValue);
 
     #[wasm_bindgen(structural, method)]
-    pub fn on_interval(this: &WasmEventListener, stroke: String, intervals: JsValue);
+    pub fn on_interval(this: &WasmEventListener, stroke_id: String, intervals: JsValue);
 
     #[wasm_bindgen(structural, method)]
     pub fn on_deltas(this: &WasmEventListener, deltas: Box<[u8]>);
@@ -38,12 +40,15 @@ extern "C" {
 }
 
 impl EventListener for WasmEventListener {
-    fn on_stroke(&self, stroke: String, points: &VecMap<Point>) {
-        self.on_stroke(stroke, to_js_value(points).unwrap())
+    fn on_stroke(&self, stroke_id: String, points: Ref<VecMap<Point>>) {
+        self.on_stroke(
+            stroke_id,
+            to_js_value(&points.deref().values().fuse().collect::<Vec<&Point>>()).unwrap(),
+        )
     }
 
-    fn on_interval(&self, stroke: String, intervals: &IntervalUnion<NotNan<f32>>) {
-        self.on_interval(stroke, to_js_value(intervals).unwrap())
+    fn on_interval(&self, stroke_id: String, intervals: Ref<IntervalUnion<NotNan<f32>>>) {
+        self.on_interval(stroke_id, to_js_value(intervals.deref()).unwrap())
     }
 
     fn on_deltas(&self, deltas: DeltaVec) {
@@ -99,7 +104,7 @@ impl WasmCRDT {
         y: i32,
         weight: f32,
         colour: &str,
-    ) -> bool {
+    ) -> Option<usize> {
         self.0.add_point(stroke_id, x, y, weight, colour)
     }
 
@@ -111,13 +116,19 @@ impl WasmCRDT {
         self.0.erase_stroke(stroke_id, from, to)
     }
 
+    pub fn get_stroke_ids(&self) -> Result<JsValue, JsValue> {
+        Ok(to_js_value(&self.0.get_stroke_ids())?)
+    }
+
     pub fn get_stroke_points(&self, stroke_id: &str) -> Result<JsValue, JsValue> {
         let points = match self.0.get_stroke_points(stroke_id) {
             Some(points) => points,
             None => return Err(Error::new("Unknown stroke ID").into()),
         };
 
-        Ok(to_js_value(points)?)
+        Ok(to_js_value(
+            &points.deref().values().fuse().collect::<Vec<&Point>>(),
+        )?)
     }
 
     pub fn get_stroke_intervals(&self, stroke_id: &str) -> Result<JsValue, JsValue> {
@@ -126,10 +137,10 @@ impl WasmCRDT {
             None => return Err(Error::new("Unknown stroke ID").into()),
         };
 
-        Ok(to_js_value(intervals)?)
+        Ok(to_js_value(intervals.deref())?)
     }
 
-    pub fn fetch_events(&mut self) {
+    pub fn fetch_events(&self) {
         self.0.fetch_events()
     }
 
diff --git a/www/bootstrap.js b/www/bootstrap.js
deleted file mode 100644
index 7934d627e8232aaa8911369d96ee91fe6a550837..0000000000000000000000000000000000000000
--- a/www/bootstrap.js
+++ /dev/null
@@ -1,5 +0,0 @@
-// A dependency graph that contains any wasm must all be imported
-// asynchronously. This `bootstrap.js` file does the single async import, so
-// that no one else needs to worry about it again.
-import("./index.js")
-  .catch(e => console.error("Error importing `index.js`:", e));
diff --git a/www/index.html b/www/index.html
deleted file mode 100644
index ca5615c129cf1cb14151f572e6c7388c5f1c0dd8..0000000000000000000000000000000000000000
--- a/www/index.html
+++ /dev/null
@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Hello wasm-pack!</title>
-  </head>
-  <body>
-    <noscript>This page contains webassembly and javascript content, please enable javascript in your browser.</noscript>
-    <script src="./bootstrap.js"></script>
-  </body>
-</html>
diff --git a/www/index.js b/www/index.js
deleted file mode 100644
index a28863e956348ed140681dfdb31b3850aa9376ce..0000000000000000000000000000000000000000
--- a/www/index.js
+++ /dev/null
@@ -1,93 +0,0 @@
-import { WasmCRDT } from "drawing-crdt"
-
-const broadcasts = []
-
-const crdt = new WasmCRDT({
-  on_stroke: (stroke, points) => {
-    console.log("on_stroke:", stroke, points)
-  },
-  on_interval: (stroke, intervals) => {
-    console.log("on_interval", stroke, intervals)
-  },
-  on_deltas: (deltas) => {
-    console.log("on_deltas:", deltas)
-    broadcasts.push(deltas)
-  },
-  on_deltas_from_state: (user, deltas) => {
-    console.log("on_deltas_from_state:", user, deltas)
-  },
-})
-
-console.log("CRDT original StateVec", crdt.get_state_vector())
-
-crdt.set_user("36577c51-a80b-47d6-b3c3-cfb11f705b87")
-console.log("original user:", crdt.get_user())
-console.log("canonical user:", WasmCRDT.canonicalise_user(crdt.get_user()))
-
-console.log("canonical stroke author 1:", WasmCRDT.canonicalise_stroke_author(crdt.add_stroke(4, 2, 3.14, "ffff00")))
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-
-let end_id = crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.erase_stroke(end_id, 0.0, 0.0)
-console.log("canonical stroke author 4:", WasmCRDT.canonicalise_stroke_author(end_id))
-
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.add_stroke(4, 2, 3.14, "ffff00")
-
-crdt.end_stroke(end_id)
-
-let stroke_id = crdt.add_stroke(4, 2, 3.14, "ffff00")
-crdt.add_point(stroke_id, 2, 4, 4.13, "0000ff")
-crdt.erase_stroke(stroke_id, 0.0, 2.0)
-
-console.log("pre fetch events")
-crdt.fetch_events();
-console.log("post fetch events")
-
-console.log("pre fetch deltas")
-crdt.fetch_deltas();
-console.log("post fetch deltas")
-
-crdt.erase_stroke(stroke_id, 0.0, 0.25)
-crdt.erase_stroke(stroke_id, 0.5, 2.25)
-crdt.erase_stroke(stroke_id, 2.5, 3.0)
-
-console.log("pre fetch events")
-crdt.fetch_events();
-console.log("post fetch events")
-
-console.log("pre fetch deltas")
-crdt.fetch_deltas();
-console.log("post fetch deltas")
-
-const crdt2 = new WasmCRDT({
-  on_stroke: (stroke, points) => {
-    console.log("on_stroke2:", stroke, points)
-  },
-  on_interval: (stroke, intervals) => {
-    console.log("on_interval2", stroke, intervals)
-  },
-  on_deltas: (deltas) => {
-    console.log("on_deltas:2", deltas)
-  },
-  on_deltas_from_state: (user, deltas) => {
-    console.log("on_deltas_from_state:", user, deltas)
-  },
-})
-
-console.log("pre apply 2nd deltas + fetch events")
-crdt2.apply_deltas(broadcasts[1])
-crdt2.fetch_events()
-console.log("post apply 2nd deltas + fetch events")
-
-console.log("CRDT StateVec", crdt.get_state_vector())
-
-const state2 = crdt2.get_state_vector()
-console.log("CRDT2 StateVec", state2)
-
-console.log("pre fetch deltas from 1 for 2")
-crdt.fetch_deltas_from_state_vector("moritz", state2)
-console.log("post fetch deltas from 1 for 2")
diff --git a/www/package-lock.json b/www/package-lock.json
deleted file mode 100644
index 692bd0caf95e7bc80cf800fb439ded9ff10b54e5..0000000000000000000000000000000000000000
--- a/www/package-lock.json
+++ /dev/null
@@ -1,5933 +0,0 @@
-{
-  "name": "create-wasm-app",
-  "version": "0.1.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "@types/events": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@types/events/-/events-3.0.0.tgz",
-      "integrity": "sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==",
-      "dev": true
-    },
-    "@types/glob": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/@types/glob/-/glob-7.1.1.tgz",
-      "integrity": "sha512-1Bh06cbWJUHMC97acuD6UMG29nMt0Aqz1vF3guLfG+kHHJhy3AyohZFFxYk2f7Q1SQIrNwvncxAE0N/9s70F2w==",
-      "dev": true,
-      "requires": {
-        "@types/events": "*",
-        "@types/minimatch": "*",
-        "@types/node": "*"
-      }
-    },
-    "@types/minimatch": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
-      "integrity": "sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==",
-      "dev": true
-    },
-    "@types/node": {
-      "version": "12.12.21",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.12.21.tgz",
-      "integrity": "sha512-8sRGhbpU+ck1n0PGAUgVrWrWdjSW2aqNeyC15W88GRsMpSwzv6RJGlLhE7s2RhVSOdyDmxbqlWSeThq4/7xqlA==",
-      "dev": true
-    },
-    "@webassemblyjs/ast": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
-      "integrity": "sha512-aJMfngIZ65+t71C3y2nBBg5FFG0Okt9m0XEgWZ7Ywgn1oMAT8cNwx00Uv1cQyHtidq0Xn94R4TAywO+LCQ+ZAQ==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/helper-module-context": "1.8.5",
-        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
-        "@webassemblyjs/wast-parser": "1.8.5"
-      }
-    },
-    "@webassemblyjs/floating-point-hex-parser": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/floating-point-hex-parser/-/floating-point-hex-parser-1.8.5.tgz",
-      "integrity": "sha512-9p+79WHru1oqBh9ewP9zW95E3XAo+90oth7S5Re3eQnECGq59ly1Ri5tsIipKGpiStHsUYmY3zMLqtk3gTcOtQ==",
-      "dev": true
-    },
-    "@webassemblyjs/helper-api-error": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-api-error/-/helper-api-error-1.8.5.tgz",
-      "integrity": "sha512-Za/tnzsvnqdaSPOUXHyKJ2XI7PDX64kWtURyGiJJZKVEdFOsdKUCPTNEVFZq3zJ2R0G5wc2PZ5gvdTRFgm81zA==",
-      "dev": true
-    },
-    "@webassemblyjs/helper-buffer": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-buffer/-/helper-buffer-1.8.5.tgz",
-      "integrity": "sha512-Ri2R8nOS0U6G49Q86goFIPNgjyl6+oE1abW1pS84BuhP1Qcr5JqMwRFT3Ah3ADDDYGEgGs1iyb1DGX+kAi/c/Q==",
-      "dev": true
-    },
-    "@webassemblyjs/helper-code-frame": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-code-frame/-/helper-code-frame-1.8.5.tgz",
-      "integrity": "sha512-VQAadSubZIhNpH46IR3yWO4kZZjMxN1opDrzePLdVKAZ+DFjkGD/rf4v1jap744uPVU6yjL/smZbRIIJTOUnKQ==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/wast-printer": "1.8.5"
-      }
-    },
-    "@webassemblyjs/helper-fsm": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-fsm/-/helper-fsm-1.8.5.tgz",
-      "integrity": "sha512-kRuX/saORcg8se/ft6Q2UbRpZwP4y7YrWsLXPbbmtepKr22i8Z4O3V5QE9DbZK908dh5Xya4Un57SDIKwB9eow==",
-      "dev": true
-    },
-    "@webassemblyjs/helper-module-context": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-module-context/-/helper-module-context-1.8.5.tgz",
-      "integrity": "sha512-/O1B236mN7UNEU4t9X7Pj38i4VoU8CcMHyy3l2cV/kIF4U5KoHXDVqcDuOs1ltkac90IM4vZdHc52t1x8Yfs3g==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "mamacro": "^0.0.3"
-      }
-    },
-    "@webassemblyjs/helper-wasm-bytecode": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-bytecode/-/helper-wasm-bytecode-1.8.5.tgz",
-      "integrity": "sha512-Cu4YMYG3Ddl72CbmpjU/wbP6SACcOPVbHN1dI4VJNJVgFwaKf1ppeFJrwydOG3NDHxVGuCfPlLZNyEdIYlQ6QQ==",
-      "dev": true
-    },
-    "@webassemblyjs/helper-wasm-section": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-section/-/helper-wasm-section-1.8.5.tgz",
-      "integrity": "sha512-VV083zwR+VTrIWWtgIUpqfvVdK4ff38loRmrdDBgBT8ADXYsEZ5mPQ4Nde90N3UYatHdYoDIFb7oHzMncI02tA==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/helper-buffer": "1.8.5",
-        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
-        "@webassemblyjs/wasm-gen": "1.8.5"
-      }
-    },
-    "@webassemblyjs/ieee754": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/ieee754/-/ieee754-1.8.5.tgz",
-      "integrity": "sha512-aaCvQYrvKbY/n6wKHb/ylAJr27GglahUO89CcGXMItrOBqRarUMxWLJgxm9PJNuKULwN5n1csT9bYoMeZOGF3g==",
-      "dev": true,
-      "requires": {
-        "@xtuc/ieee754": "^1.2.0"
-      }
-    },
-    "@webassemblyjs/leb128": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/leb128/-/leb128-1.8.5.tgz",
-      "integrity": "sha512-plYUuUwleLIziknvlP8VpTgO4kqNaH57Y3JnNa6DLpu/sGcP6hbVdfdX5aHAV716pQBKrfuU26BJK29qY37J7A==",
-      "dev": true,
-      "requires": {
-        "@xtuc/long": "4.2.2"
-      }
-    },
-    "@webassemblyjs/utf8": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/utf8/-/utf8-1.8.5.tgz",
-      "integrity": "sha512-U7zgftmQriw37tfD934UNInokz6yTmn29inT2cAetAsaU9YeVCveWEwhKL1Mg4yS7q//NGdzy79nlXh3bT8Kjw==",
-      "dev": true
-    },
-    "@webassemblyjs/wasm-edit": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.8.5.tgz",
-      "integrity": "sha512-A41EMy8MWw5yvqj7MQzkDjU29K7UJq1VrX2vWLzfpRHt3ISftOXqrtojn7nlPsZ9Ijhp5NwuODuycSvfAO/26Q==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/helper-buffer": "1.8.5",
-        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
-        "@webassemblyjs/helper-wasm-section": "1.8.5",
-        "@webassemblyjs/wasm-gen": "1.8.5",
-        "@webassemblyjs/wasm-opt": "1.8.5",
-        "@webassemblyjs/wasm-parser": "1.8.5",
-        "@webassemblyjs/wast-printer": "1.8.5"
-      }
-    },
-    "@webassemblyjs/wasm-gen": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-gen/-/wasm-gen-1.8.5.tgz",
-      "integrity": "sha512-BCZBT0LURC0CXDzj5FXSc2FPTsxwp3nWcqXQdOZE4U7h7i8FqtFK5Egia6f9raQLpEKT1VL7zr4r3+QX6zArWg==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
-        "@webassemblyjs/ieee754": "1.8.5",
-        "@webassemblyjs/leb128": "1.8.5",
-        "@webassemblyjs/utf8": "1.8.5"
-      }
-    },
-    "@webassemblyjs/wasm-opt": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-opt/-/wasm-opt-1.8.5.tgz",
-      "integrity": "sha512-HKo2mO/Uh9A6ojzu7cjslGaHaUU14LdLbGEKqTR7PBKwT6LdPtLLh9fPY33rmr5wcOMrsWDbbdCHq4hQUdd37Q==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/helper-buffer": "1.8.5",
-        "@webassemblyjs/wasm-gen": "1.8.5",
-        "@webassemblyjs/wasm-parser": "1.8.5"
-      }
-    },
-    "@webassemblyjs/wasm-parser": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-parser/-/wasm-parser-1.8.5.tgz",
-      "integrity": "sha512-pi0SYE9T6tfcMkthwcgCpL0cM9nRYr6/6fjgDtL6q/ZqKHdMWvxitRi5JcZ7RI4SNJJYnYNaWy5UUrHQy998lw==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/helper-api-error": "1.8.5",
-        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
-        "@webassemblyjs/ieee754": "1.8.5",
-        "@webassemblyjs/leb128": "1.8.5",
-        "@webassemblyjs/utf8": "1.8.5"
-      }
-    },
-    "@webassemblyjs/wast-parser": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wast-parser/-/wast-parser-1.8.5.tgz",
-      "integrity": "sha512-daXC1FyKWHF1i11obK086QRlsMsY4+tIOKgBqI1lxAnkp9xe9YMcgOxm9kLe+ttjs5aWV2KKE1TWJCN57/Btsg==",
-      "dev": true,
-      "requires": {
-        "@webassemblyjs/ast": "1.8.5",
-        "@webassemblyjs/floating-point-hex-parser": "1.8.5",
-        "@webassemblyjs/helper-api-error": "1.8.5",
-        "@webassemblyjs/helper-code-frame": "1.8.5",
-        "@webassemblyjs/helper-fsm": "1.8.5",
-        "@xtuc/long": "4.2.2"
-      }
-    },
-    "@webassemblyjs/wast-printer": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@webassemblyjs/wast-printer/-/wast-printer-1.8.5.tgz",
-      "integrity": "sha512-w0U0pD4EhlnvRyeJzBqaVSJAo9w/ce7/WPogeXLzGkO6hzhr4GnQIZ4W4uUt5b9ooAaXPtnXlj0gzsXEOUNYMg==",
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-      "requires": {
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-        "@xtuc/long": "4.2.2"
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diff --git a/www/package.json b/www/package.json
deleted file mode 100644
index abb50ecfb2934041656c78c9c90ed790cbf20cb6..0000000000000000000000000000000000000000
--- a/www/package.json
+++ /dev/null
@@ -1,38 +0,0 @@
-{
-  "name": "create-wasm-app",
-  "version": "0.1.0",
-  "description": "create an app to consume rust-generated wasm packages",
-  "main": "index.js",
-  "bin": {
-    "create-wasm-app": ".bin/create-wasm-app.js"
-  },
-  "scripts": {
-    "build": "webpack --config webpack.config.js",
-    "start": "webpack-dev-server --host 0.0.0.0 --disable-host-check --port 3000"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/rustwasm/create-wasm-app.git"
-  },
-  "keywords": [
-    "webassembly",
-    "wasm",
-    "rust",
-    "webpack"
-  ],
-  "author": "Ashley Williams <ashley666ashley@gmail.com>",
-  "license": "(MIT OR Apache-2.0)",
-  "bugs": {
-    "url": "https://github.com/rustwasm/create-wasm-app/issues"
-  },
-  "homepage": "https://github.com/rustwasm/create-wasm-app#readme",
-  "dependencies": {
-    "drawing-crdt": "file:../pkg"
-  },
-  "devDependencies": {
-    "webpack": "^4.29.3",
-    "webpack-cli": "^3.1.0",
-    "webpack-dev-server": "^3.1.5",
-    "copy-webpack-plugin": "^5.0.0"
-  }
-}
diff --git a/www/webpack.config.js b/www/webpack.config.js
deleted file mode 100644
index 80ad8142d2c66524978a40684df58031d4e3560b..0000000000000000000000000000000000000000
--- a/www/webpack.config.js
+++ /dev/null
@@ -1,14 +0,0 @@
-const CopyWebpackPlugin = require("copy-webpack-plugin");
-const path = require('path');
-
-module.exports = {
-  entry: "./bootstrap.js",
-  output: {
-    path: path.resolve(__dirname, "dist"),
-    filename: "bootstrap.js",
-  },
-  mode: "development",
-  plugins: [
-    new CopyWebpackPlugin(['index.html'])
-  ],
-};